Mandy Nguyen
Family Medicine Physician · Costa Mesa, CA
Mandy Nguyen is a family medicine physician with a practice address in Costa Mesa, California, and NPI 1548849979, issued on Apr 4, 2021. Check the license (California 20A21480, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mandy Nguyen
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 20A21480 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1190 Baker St Ste 100, Costa Mesa, CA 92626
- Phone
- (949) 791-3250
- Enumerated
- Apr 4, 2021
- Record last updated
- Aug 12, 2024
- Medicare enrollment
- Enrolled (PECOS I20230801001603); accepts Medicare assignment
- Medical or professional school
- Marian University College Of Osteopathic Medicine, 2021
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 1190 Baker St Ste 100
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Susan FlamingFamily Nurse Practitioner1780093237
- John Jeon, MDFamily Medicine Physician1275094872
- Trucvy Le, M.D.Family Medicine Physician1427462159
Verify Mandy Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A21480Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
74% fewer Medicare Part D claims than the average family medicine physician in 2024
926 Medicare Part D claims for 335 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium53 claims
- Amlodipine Besylate37 claims
- Albuterol Sulfate Hfa33 claims
- Losartan Potassium26 claims
- Amoxicillin-Clavulanate Potass23 claims
- Lisinopril21 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Hoag ClinicSan Clemente, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mandy Nguyen among 17,133 family medicine physician records in California
Mandy Nguyen is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 91% of them.
- NPI issued2021 · 91% of these records are older, 6% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2021 · median 2005 among the 10,652 with a school on file
- Record last updated2024 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
56 family medicine physician records list a practice address in Costa Mesa
They are 56 of the 4,286 NPPES records with a practice address in Costa Mesa, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Costa Mesa → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Ronald Bangsil, MDCosta Mesa, CA 926261043261654
- David Chun, MDCosta Mesa, CA 926261932199213
- James Ferguson, DOCosta Mesa, CA 926261689625212
- Sienna Go, M.D.Costa Mesa, CA 926261295759298
- Guy Gottschalk, M.D.Costa Mesa, CA 926261235228750
- Joseph Horejsi, MDCosta Mesa, CA 926261295726347
- Michael Kao, M.D.Costa Mesa, CA 926261316953805
- Ena Kariya, MDCosta Mesa, CA 926261588655658
Common questions
What is Mandy Nguyen's NPI number?
Mandy Nguyen's National Provider Identifier (NPI) is 1548849979, issued on Apr 4, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Mandy Nguyen located?
The NPPES record lists a practice address at 1190 Baker St Ste 100, Costa Mesa, CA, 92626. Phone: (949) 791-3250. Providers update this record themselves, so call before visiting.
How can I verify Mandy Nguyen's license?
NPPES lists California license number 20A21480, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mandy Nguyen prescribe under Medicare Part D?
In 2024, Mandy Nguyen had 926 Medicare Part D claims for 335 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.